I don't have a Bushy 20" but I do have an Armalite 20" A2 (which has never been fired) if you're interested. It does have the OD handguards, however. What is the condition, overall, of your upper? Would you rate as good, very good, excellent, near mint?
Also, it's obvious you're a new member and you don't list a state of residence, do you have any references? Not trying to be rude here, just careful. I've been burned before.